Gongchangling Sedimentary Metamorphism Iron Mine Structural Control Of Iron In Liaoning Province

The Gongchangling iron ore is located in Liaoyang City, Liaoning Province, southeasttectonic position belongs to the multi-stage evolution of mantle plume tectonic units of thenorth side of the Liaodong Southern mantle branch peripheral detachment zone. Named, asChina’s Anshan Iron Gongchangling iron ore sedimentary metamorphic rich iron oredeposits attracted worldwide attention and widespread attention of scholars at home andabroad, research numerous as the stars.Take full advantage of the previous information based on field research progress, fromthe regional tectonic combined geophysical characteristics, through the study of thegeological features, rock geochemistry, ore-controlling structure, mineralization from themantlethe thermal column multistage evolutionary point of view analysis Gongchanglingiron ore-controlling structure conditions, and with mine as an example analysis mantlebranch ore-controlling characteristics establish the iron deposit control Gongchanglingmine mode. Main understanding of:1. Migmatization Gongchangling mine two. Migmatization occurred in about2.99Gathe gneissic granite Gongchangling representative with the saddle the region Tiejia Hill,Chen Taiwan ditch, ditch the mixed granite temple children for the same period. Secondmigmatization occurred in about2.5Ga potassic granite the Gongchangling Ma Yu as therepresentative of the saddle in the region after the graves along the Cherry Orchard a mixedgranite for the same period. The2.5Ga Gongchangling migmatite class typicalcrust-alkaline granite, which are to construct the multi-activity features and LiaodongSouthern mantle branch coincide.2.Mine and its surrounding saddle of Gongchangling iron ore deposits of the region bythe tectonic units of the third stage of the mantle plume Liaodong Southern mantle branchstructure in the Mesozoic activities southern Liaoning overall uplift close to the surfaceagain, epigastric detachmentwith uplifting high, after weathering and erosion, making theiron deposit Gongchangling outcropping.3.Based on silicon, sulfur, oxygen isotope characteristics known banded magnetitequartzite is the volcanic sedimentary metamorphic origin, as the minerals iron from thedeep, and it is brought about by the first the Liaodong Southern mantle branch activities.4.Magnet bonanza of formation should be brought mantle plume active again after thegas-water hydrothermal formation of banded magnetite quartzite, accompanied tosilicification, iron enrichment down.5.The region is generally considered the fold structures are not developed, but thepaper argues that the fold structure in the area commonly developed macro general hasgone through several stages of the rheological folds, recumbent fold, recumbent folds,while II, Gongchangling iron ore mine should be locatedone large recumbent fold thewings.6.The transformation of the early formation of sedimentary iron folds, ductile shearing,faulting, and uplift of the mantle branch role under the joint action.